### RE: Clarification letters regarding 20.2.72 NMAC Singleton,Kerwin, NMENV to: Ashley Mohr 09/25/2012 10:52 AM

Cc: "Weaver, Lany, NMENV", "Bates, Rita, NMENV" , "Cooke, Gail, NMENV", Abi Vijayan

History: This message has been replied to.

1 attachment



### Ashley,

T he sub j ect item breakdown is as follows:

 22 Backup/Standby

 30 Emergency

 493 Exempt

 397 Insignificant A copy of the data pull is attached to this email. Should you require further clarification, please do not hesitate to contact me. Regards, 

### Kerwin C. Singleton Manager, Control Strategies

A ir Quality Bureau

505.476.4350 505.476.4375 (FAX)

1301 Siler Road - Bldg B Santa Fe, NM 87507-3113 

# 

Please consider the environment before printing this e-mail.

From: A shley Mohr [mailto:Mohr. A shley@epamail.epa.gov] Sent: Tuesday, September 25, 2012 9:21 A M To: Singleton,Kerwin, NMENV Cc: Weaver, Lany, NMENV; Bates, Rita, NMENV; Cooke, Gail, NMENV; A bi Vi j ayan Subject: Re: Clarification letters regarding 20.2.72 NMAC

Kerwin,

You were listed as the staff contact on the Part 72 clarification letter regarding permit exemptions, so I am
reaching out to you regarding a follow-up question I had after reviewing the letter.

Based on my understanding of the letter, the "excess of 2,000 active individual units" accounts for the multiple units included in the total of 942 subject items for the 4 different categories referenced in the letter (Backup/Standby, Emergency, Exempt, Insignificant). Do you have information regarding the number of individual active units for each of the 4 categories. I am trying to get an idea of how many of the 2,000 active individual units did claim an exemption. I assume that those sources in the Exemptcategory in the database would reflect this information. I understand that this would not include all sources that utilized an exemption under Section 202, since all exemptions do not require notification under the provisions of Part 72 in addition to any sources that may not have been entered into the

database.

Thanks in advance for your help. Feel free to give me a call if you have any questions.

Ashley

_ _________________________________ Ashley N.Q. Mohr
Environmental Scientist Air Permits Section (6PD-R) U.S. Environmental Protection Agency

1445 Ross Avenue Dallas, TX 75202 (214) 665-7289 FAX (214) 665-6762 mohr.ashley@epa.gov

From: "Weaver, Lany, NMENV" < lany.weave r @state.nm.us >

To: Thomas Diggs/R6/USEPA/US@EPA, Jeffrey Robinson/R6/USEPA/US@EPA, A shley Mohr/R6/USEPA/US@EPA

Cc: "Bates, Rita, NMENV" < Rita.Bates@state.nm.us >, "Singleton,Kerwin, NMENV" < Kerwin.Singleton@state.nm.us >,
"Goodyear, Richard, NMENV" < richard.goodyear@state.nm.us >, "Cooke, Gail, NMENV" < gail.cooke@state.nm.us >

Date: 09/19/2012 05:37 PM

Subject: Clarification letters regarding 20.2.72 NMAC

Please find attached 2 letters providing additional information about submittals of revisions to 20.2.72 NMAC

– Construction Permits. One provides a clarification of the intent of Section 220 (General Construction Permits to

not apply to PSD sources), and the other provides information (to the extent available) about the exemptions

provisions in Section 202

. The hard copies of the letters will be sent to Tom Diggs.

If you have additional questions, please contact Rita Bates or Kerwin Singleton.

Lany Weaver

N ew Mexico Environment Departmen t
Air Quality Bureau (505) 476-4322[attachment "Clarification

_ of

_ 20.2.72.220

_ N MAC.pdf" deleted by Ashley Mohr/R6/USEPA/US] [attachment "Exemptions

_ under

_ 20.2.72.202

_ N MAC.pdf" deleted by Ashley Mohr/R6/USEPA/US]